Yongjia NSV Valve Co., Ltd: NSV VALVE focus on piping engineering solutions for whole world market, it has been committed to manufacturing cast and forged steel industrial valves for applications in petroleum, chemical, power generation, aluminium, mining, paper&pulp of various industries. NSV takes sincere pride in our ability to design, manufacture both conventional and special alloy valves that have been certified by global many end user and EPC's.